| A | B |
|---|
| Hypothyroidism | T3 and T4 are not available in sufficient quantities. |
| Hyperthyroidism | T3 and T4 are available in excessive quantities. |
| Treatment for hypothyroidism | Lifelong thyroid replacement therapy. |
| Treatment for hyperthyroidism | Medication, radioactive iodine, or surgery. |
| Symptoms of hypothyroidism | Weakness, constipation, weight gain, cold intolerance. |
| Symptoms of hyperthyroidism | Exopthalmos, tachycardia, weight loss, hair loss. |
| High TSH | Hypothyroidism |
| Low TSH | Hyperthyroidism |
| Hypoparathyroidism | PTH is available in insufficient quantities |
| Hyperparathyroidism | PTH is available in excessive quantities |
| Cause of hypoparathyroidism | Injury to parathyroid glands during head and neck surgery |
| Cause of hyperparathyroidism | Parathyroid adenoma, CRF w/ hypercalcemia |
| Normal phosphorus level | 2.7 to 4.6 mg/dL |
| Treatment of hypoparathyroidism | Calcium carbonate and vitamin D supplements |
| Symptoms of hypoparathyroidism | Tingling in lips, fingers, toes; muscle cramps |
| Symptoms of hyperparathyroidism | Weakness, depression, loss of appetite |
| Normal calcium level | 8.5 to 10.5 mg/dL |
| Normal magnesium level | 1.25 to 2.5 mEq/L |
